| W H F Management Ltd | Real estate | 2004 |
| W M Snell Ltd | Wholesale & retail | 2006 |
| W&W Homes Limited | Real estate | 2022 |
| W&W Management Limited | Real estate | 2025 |
| W.& H.Elliotts Limited | Professional & scientific | 1931 |
| WAG Design Limited | Professional & scientific | 2000 |
| Waldron Properties Limited | Real estate | 2020 |
| Wallace & Wilson Ltd | Wholesale & retail | 2024 |
| Walthew Property Investments Limited | Real estate | 2025 |
| Walton & Hersham Funeral Directors Limited | Other services | 2003 |
| Wapping London Limited | Professional & scientific | 2014 |
| Water Oakley (Hampshire) Limited | Agriculture & fishing | 2018 |
| Waterbrook Machinery Group | Administrative & support | 1999 |
| Watercress Dental Ltd | Health & social care | 2015 |
| Watercress Place Residents Company Limited | Households | 1995 |
| Watermill Digital Ltd | Information & communication | 2025 |
| Watson Systems Engineering Ltd | Information & communication | 2024 |
| Wave Tech Resources Ltd | Professional & scientific | 2022 |
| Wayne Mansford Roofing Ltd | Construction | 2020 |
| WDB Property Maintenance Ltd | Construction | 2025 |
| WE ARE Cloud Ltd. | Information & communication | 2013 |
| WE ARE STQ Limited | Professional & scientific | 2026 |
| Webagility Limited | Information & communication | 2007 |
| Webmagnet Limited | Professional & scientific | 2025 |
| Webnest Limited | Information & communication | 2025 |
| Well Done Catering Ltd | Hospitality | 2024 |
| Wellington Ford Financial Ltd | Financial services | 2012 |
| Wellness Sports Massage Ltd | Arts & recreation | 2015 |
| Wellness Swim Club Ltd | Other services | 2016 |
| Wellstead Engineering Ltd. | Professional & scientific | 1994 |
| Welwyn Garden City (T) Hairdressing Limited | Other services | 2000 |
| Wenman Demolition Ltd | Construction | 2011 |
| Wessex Contracting Management Ltd | Real estate | 2010 |
| West Green House Opera Limited | Arts & recreation | 2011 |
| West Meon Kebab Ltd | Hospitality | 2025 |
| West Property Control Limited | Real estate | 2022 |
| Westbrook Normandy Street Ltd | Real estate | 1983 |
| Westbrook Property Developments Limited | Professional & scientific | 1982 |
| Western Bloc Limited | Real estate | 2023 |
| Westfield (T) Hairdressing Limited | Other services | 2013 |
| Westford Group Ltd | Wholesale & retail | 2026 |
| Westminster Insurance Services Limited | Construction | 1996 |
| Westward Hill Limited | Real estate | 2016 |
| Westwood Travel Limited | Administrative & support | 2017 |
| Wettone Matthews Limited | Professional & scientific | 2001 |
| WEY Valley Radio (Alton) Ltd | Information & communication | 2015 |
| WEY Wills Limited | Professional & scientific | 2020 |
| Weyside Decorators Limited | Construction | 2003 |
| White Kelly & Booker Holdings Limited | Financial services | 2023 |
| Whitechapel Hairdressing Ltd | Other services | 2018 |
| Whitestar Development Limited | Information & communication | 2007 |
| Whitfield Place Production Limited | Information & communication | 2024 |
| Whitley's Jewellers Limited | Wholesale & retail | 2002 |
| WIA Limited | Professional & scientific | 2026 |
| Wicket Maintenance Limited | Administrative & support | 1961 |
| Wickham Perioperative Limited | Health & social care | 2026 |
| Wide Capture Ltd | Professional & scientific | 2026 |
| Wigan (T) Hairdressing Limited | Other services | 2003 |
| Wightman Consulting Limited | Information & communication | 1998 |
| Wigmore Street (T) Hairdressing Limited | Other services | 2020 |
| Wilcox & Co.(Limousines)Limited | Wholesale & retail | 1960 |
| Wilcox Carriage Limited | Wholesale & retail | 1978 |
| Wild Bruu Ltd | Manufacturing | 2026 |
| Wild House Play Café Ltd | Hospitality | 2024 |
| Wildfire Tattoo Collective Ltd | Other services | 2016 |
| William Martin Developments Ltd | Construction | 2004 |
| Williams Mckernan Limited | Other services | 2014 |
| Willis Rose Ltd | Administrative & support | 2015 |
| Wilmslow (T2) Hairdressing Limited | Other services | 2022 |
| Wilson Evans Consulting Limited | Professional & scientific | 2008 |
| Wilson Recycling Limited | Water & waste | 2013 |
| Wiltshire House Investments Ltd | Real estate | 2011 |
| Wimbledon (T) Hairdressing Limited | Other services | 2020 |
| Wimbledon Chase Properties Limited | Real estate | 2026 |
| Winchester Builders and Decorators Limited | Construction | 2006 |
| Winchester Hairdressing Limited | Other services | 2015 |
| Winchfield SYC II LLP | | 2012 |
| Windmill Medical Limited | Professional & scientific | 2024 |
| Winglet Consultancy Ltd | Professional & scientific | 2023 |
| Winning Marketing Limited | Information & communication | 2023 |
| Winsdown House Management Company Limited | Households | 1986 |
| Wistaria (Medstead) Management Company Limited | Real estate | 2015 |
| WKC Cars Limited | Wholesale & retail | 2019 |
| WM Auto Detailing Ltd | Wholesale & retail | 2022 |
| WM Building Ltd | Construction | 2020 |
| WM Roofing Services Ltd | Construction | 2022 |
| WM SKI Limited | Arts & recreation | 2016 |
| Woking (T3) Hairdressing Limited | Other services | 2025 |
| Wokingham (T) Hairdressing Limited | Other services | 2008 |
| Wolery Property Ltd | Real estate | 2023 |
| Wolfdev Limited | Professional & scientific | 2024 |
| Women WHO Defend US Limited | Public administration | 2019 |
| Wonder Llama Limited | Information & communication | 2009 |
| Wood-Fest Productions Ltd | Arts & recreation | 2023 |
| Woodcote & Vale Ltd | Wholesale & retail | 2026 |
| Woodfield (Medstead) Management Company Limited | Households | 2016 |
| Woodfield 2 (Medstead) Management Company Limited | Households | 2016 |
| Woods Bros Ltd | Construction | 2013 |
| Woodside Rentals Ltd | Real estate | 2019 |
| Worcester (T2) Hairdressing Limited | Other services | 2017 |